U.S. finds fourth case of mad cow disease

4:09 PM,
Apr. 24, 2012

Written by

CHRISTOPHER DOERING, Gannett Washington Bureau

WASHINGTON - The United States found its fourth case of mad cow disease, in an adult dairy cow in central California, the U.S. Department of Agriculture said Tuesday. But officials cautioned that the animal did not enter the food chain and there was no threat to beef or milk.

USDA said it did not have information such as the age of the cow or the timetable of events in which the mad cow finding was discovered.

"It was never presented for slaughter for human consumption, so at no time presented a risk to the food supply or human health," said John Clifford, USDA's chief veterinarian. ...